1980718741 has 2 divisors, whose sum is σ = 1980718742. Its totient is φ = 1980718740.

The previous prime is 1980718717. The next prime is 1980718759. The reversal of 1980718741 is 1478170891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1980695025 + 23716 = 44505^2 + 154^2 .

It is an emirp because it is prime and its reverse (1478170891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1980718741 - 2⁷ = 1980718613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1980718691 and 1980718700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980718771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990359370 + 990359371.

It is an arithmetic number, because the mean of its divisors is an integer number (990359371).

Almost surely, 2^1980718741 is an apocalyptic number.

It is an amenable number.

1980718741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980718741 is an equidigital number, since it uses as much as digits as its factorization.

1980718741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 46.

The square root of 1980718741 is about 44505.2664411753. The cubic root of 1980718741 is about 1255.8591580496.

The spelling of 1980718741 in words is "one billion, nine hundred eighty million, seven hundred eighteen thousand, seven hundred forty-one".